25517493116 has 6 divisors (see below), whose sum is σ = 44655612960. Its totient is φ = 12758746556.

The previous prime is 25517493103. The next prime is 25517493143. The reversal of 25517493116 is 61139471552.

It is a super-3 number, since 3×25517493116³ (a number of 32 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3189686636 + ... + 3189686643.

It is an arithmetic number, because the mean of its divisors is an integer number (7442602160).

Almost surely, 2^25517493116 is an apocalyptic number.

It is an amenable number.

25517493116 is a deficient number, since it is larger than the sum of its proper divisors (19138119844).

25517493116 is a wasteful number, since it uses less digits than its factorization.

25517493116 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6379373283 (or 6379373281 counting only the distinct ones).

The product of its digits is 226800, while the sum is 44.

The spelling of 25517493116 in words is "twenty-five billion, five hundred seventeen million, four hundred ninety-three thousand, one hundred sixteen".